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OWC Mercury Elite Pro mini

4.0TB 5400RPM
Bus-Powered, Multi-Interface Storage Solution

Mac / PC / USB 3.0 & 2.0 / eSATA
  • Mac
  • PC
  • eSATA
  • USB 3.0
High-performance and Plug and Play data storage/backup reliability with a fanless, bus-powered design
With your choice of a 2.5" Serial ATA (SATA) hard drive OR Solid State Drive (SSD), the latest chipset, and USB 3.0/eSATA interfaces, the Mercury Elite Pro mini Portable Storage Solution delivers up to 600MB/s data transfer speeds for demanding data storage and backup needs. All that performance resides in an impact resistant, heat dissipating 5.5 in (L) x 3.8 in (W) x 1.1 in (H) brushed aluminum enclosure with super-quiet operation.

When you want high style in high performance storage, look no further than the Mercury Elite Pro mini. With the highest quality drive mechanism built into a shock resistant portable aluminum enclosure, the Mercury Elite Pro mini is ready to go wherever you need an A/V, Digital Photography, Professional Music, Graphics, General Data, and Time Machine ready storage solution.
  • Interfaces: USB 3.0 & 2.0; eSATA 6G
  • The USB 3.0 Micro-B port is backwards compatible with USB 2.0 cables (USB 3.0 standard A to Micro-B connecting cable is included)
  • All interface cables are included
  • Bus-powered via USB 3.0 (DC to USB connector included)
  • Data transfer speeds up to 600MB/s (via eSATA; 500MB/s via USB 3.0)
  • Perfect for digital photography, professional music, graphics, general data, and Time Machine
  • Portable size at 5.5in(L) x 3.8in(W) x 1.1in(H)
  • Brushed aluminum, impact resistant, heat dissipating enclosure
  • Super-quiet, fanless operation
  • Asmedia 1051E and 1456 high-performance chipset
*When using eSATA connection, the use of a powered USB port or optional AC Adapter (not included) is required.

Includes

  • OWC Mercury Elite Pro mini Bus-Powered, Multi-Interface, USB 3.0 & 2.0, eSATA Storage Solution with Hard Drive
  • 18 in (46 cm) High-quality eSATA connecting cable
  • 18 in (46 cm) High-quality USB 3.0 connecting cable
  • High-quality DC to USB connector
  • Mercury Elite Pro mini Assembly Manual & User Guide (Download only)

Gallery

Product Specifications:

Chipset

  • Asmedia 1051E and 1456 High-Performance Chipset

Standard Mechanism

    4.0TB Seagate Laptop HDD Specifications:

    Specifications

    Form Factor
    2.5-inch HDD
    Interface
    SATA 6.0Gb/s
    Capacity1
    4.0TB
    Formatted Capacity2
    3725GiB
    Rotational Speed
    5,400 RPM
    Cache / Data Buffer
    128MB
    Manufacturer Model Number
    ST4000LM016
    RoHS Compliant
    Yes
    Format

    Physical

    Height (max)
    15.0 mm (0.59″)
    Width (max)
    69.9 mm (2.75″)
    Length (max)
    100.4 mm (3.95″)
    Weight (typical)
    200g (0.44 lbs.)
    Data Heads
    10
    Number of Disks
    5
    Guaranteed Sectors
    7,814,037,168
    Bytes per Sector (Physical)
    4096
    Areal Density
    1026 Gb/in2

    Reliability3

    Load/Unload Cycles
    600,000
    Nonrecoverable Read Errors
    1 per 1014 bits read

    Performance

    Transfer Rate (Max)
    130 MB/s
    Track-to-track Seek (ms)
    Read/Write: 1.5/2.0
    Average Seek Time (ms)
    Read/Write: 12/15
    Average Latency
    5.6ms

    Power

    Start Current, DC
    1.2 Amps
    Read Power
    1.9 Watts
    Write Power
    2.1 Watts
    Idle Mode Average
    1.8 Watts
    Idle Mode, Active
    1.1 Watts
    Idle Mode, Low Power
    0.85 Watts
    Standby Mode
    0.18 Watts
    Sleep Mode
    0.18 Watts

    Environmental (Operating)

    Shock
    300 Gs at 2ms
    Ambient Temperature (°F)
    32°F to 140°F
    Ambient Temperature (°C)
    0°C to 60°C
    Relative Humidity (non-condensing)
    5% to 95%
    Altitude
    -304.8 m to 3,048 m (-1,000 ft to 10,000+ ft)

    Environmental (Non-Operating)

    Shock
    650 Gs at 1ms
    Ambient Temperature (°F)
    -40°F to 158°F
    Ambient Temperature (°C)
    -40°C to 70°C
    Relative Humidity (non-condensing)
    5% to 95%
    Altitude
    -304.8 m to 12,192 m (-1000 ft to 40,000+ ft)

    Acoustics

    Idle (Typical)
    2.4 bels
    Seek (Typical)
    2.6 bels
    1. 1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.
    2. In terms of standard gigabytes, 1GiB ≈ 1.074GB and refers to the actual formatted capacity of shown under Mac OS 10.5 or earlier and Microsoft Windows OS.
    3. Specific application environments such as temperature and duty cycle will affect the overall reliability rates.
  • 4.0TB Seagate Laptop Hard Drive**

  • *1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.

    **OWC reserves the right to replace or upgrade to equivalent or better components.

Drive Interface

  • SATA (Serial ATA)

Drive Cache Size

  • 16 Megabyte (16,384k)

Drive Rotation Speed

  • 5400 RPM

Port Configuration

  • eSATA – 1 port
  • USB 3.0 – (1) Micro-B port

Max Data Transfer Rate

  • eSATA – 600 MB/s
  • USB 3.0 – 500 MB/s
  • USB 2.0 – 60MB/s
  • USB 1.1 – 1.5MB/s

Port/Interface Bootability

    Can I use this solution as an external startup drive?
  • eSATA: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • USB 3.0: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • USB 2.0: Supported on Macs and PC's meeting minimum requirements. - Click for more info

Format

UASP (USB Attached SCSI Protocol) Compliant

  • Yes

Macintosh System Requirements

  • Mac OS 8.6 to 9.2.2, Mac OS X 10.0.x or later and an available USB 1.1.
  • Mac OS X 10.2.8 or later. Including 'Mavericks' 10.9.x and an available USB2.0/1.1, or eSATA port.
  • Time Machine® Compatible: Mac OS X 10.5 (version introduced) and later.

Windows System Requirements

  • Windows 98SE or later and an available USB 2.0/1.1 port.
  • Windows 2000 or later and an available USB 2.0/1.1, or eSATA port.

Linux Requirements

  • Linux compatible via supported USB interface.

Power Supply*

  • Bus Power via USB on most computers with USB 2.0 port factory stock.
  • Optional AC Adapter* (available as a separate purchase here)
  • * AC adapter not required for most applications provided computer bus supplies appropriate power needs.

Recommended eSATA Cards

Related Items

External Case Dimensions

  • 3.8 in (W) x 5.5 in (D) x 1.1 in (H)
  • 96.52mm x 139.7mm x 27.94mm

Total Shipping Weight

  • Approximately .73 pounds (.33kg)

Operating Environment:

Temperature

  • (operating) 0°C – 70°C (32°F – 158°F)
  • (non-operating) -40°C – 85°C (-40°F – 185°F)

Relative Humidity

  • (operating) 5% – 90% RH (Non-condensing)
  • (non-operating) 5% – 95% RH (Non-condensing)

Shock

  • (non-operating) up to1500G

Vibration

  • (operating) 1.0G (5 – 300Hz)
  • (non-operating) 5.0G (5 – 500Hz)

Load/Unload Cycles

  • 600,000
Manufacturer provided specifications for Other World Computing p/n ME6UM5T4.0 UPC#: 810586030465

Benchmarks

Click any of the benchmarks below to view the results.

Reviews

Customer Ratings

Write a Review 4.8 / 5 65 out of 67 (97%) reviewers would recommend this product
Verified Buyer
Reviewer: Jigbobby Location: Western Washington Age: 55-65 Experience Level: Hobbiest Owned Product: less than a month
Rating: 5/5 Excellent enclosure overall April 23, 2018 This is a great enclosure for one 2.5" drive. I used a 2TB OWC Mercury Extreme, and this gives me a very fast, silent drive to add to my iMac Pro. The enclosure is solidly built and pleasing to the eye. I intend to buy more as I increase my storage.

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA 6Gb/s Drive Enclosure Kit. Customer Videos:

Verified Buyer
Reviewer: Honest996 Location: Charlotte, NC Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great Product! April 19, 2018 I bought two of these enclosures and put a SSD in one and a hard drive in the other. They are both working fine! This is a great way to reuse drives from a failed computer and very cost effective.

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA 6Gb/s Drive Enclosure Kit. Customer Videos:

Verified Buyer
Reviewer: Macaholic Location: Fort Worth, Texas Age: Over 65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 Best of Show February 16, 2018 Well made. drive installation is dead easy, and there is no fan so with the proper drive it is dead quiet. There are smaller enclosures on the market, but this one appears to be built for the long haul.

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA 6Gb/s Drive Enclosure Kit. Customer Videos:

Verified Buyer
Reviewer: 4N68R Location: So Cal Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Works fabulously January 17, 2018 I would recommend this item to a friend! This review is from 500GB OWC Mercury Elite Pro mini Portable SSD USB 3.0 + eSATA Storage Solution. Customer Videos:
Verified Buyer
Reviewer: Surfer Location: Hawai'i Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Fits my needs December 17, 2017 Perfect for MacBook Pro 2007.... model 10.7.5. Easy to set up....OWC gave support for my questions.

I would recommend this item to a friend! This review is from 2.0TB OWC Mercury Elite Pro mini Portable 5400RPM USB 3.0 + eSATA Storage Solution. Customer Videos:

Verified Buyer
Reviewer: WhiteSpider Location: Cross Junction, VA Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Awesome Drive! November 28, 2017 When I purchased a used Mac from OWC, I had explained I wanted to swap out the fusion drive with an SSD. After some discussion and them understanding my business and what I needed the SSD for, they suggested the easier solution of adding this drive for my OS and apps, keeping the internal fusion as storage and scratch space. The setup works perfect, could not be happier. Apps launch blazing fast, drive is nice and quiet being an SSD. Love it! Thanks OWC, you rock!

I would recommend this item to a friend! This review is from 500GB OWC Mercury Elite Pro mini Portable SSD USB 3.0 + eSATA Storage Solution. Customer Videos:

Verified Buyer
Reviewer: ScottCa Location: Denver, CO Age: 35-44 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 The Only SSD's I Use October 4, 2017 I own three of these - they are my drives for 4K video production. Super fast. Always reliable. I will be buying more.

I would recommend this item to a friend! This review is from 500GB OWC Mercury Elite Pro mini Portable SSD USB 3.0 + eSATA Storage Solution. Customer Videos:

Verified Buyer
Reviewer: MacGuySrq Location: Sarasota, FL Age: 55-65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 5/5 Dependable unit November 8, 2016 I use these for myself and buy them on spec for customers. I am a Mac Specialist and use these units almost exclusively for Time Machine backups. Their dependability long term is unsurpassed. I personally have OWC enclosures that are 8-10 years old and have never had an issue.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury Elite Pro mini Portable 5400RPM USB 3.0 + eSATA Storage Solution. Customer Videos:

Verified Buyer
Reviewer: hilltop Location: massachusetts, usa Age: 55-65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 fast small sturdy October 27, 2016 This drive with a carrying case was perfect for audio editing for a sound engineering course. Fast, small, sturdy.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury Elite Pro mini Portable 7200RPM USB 3.0 + eSATA Storage Solution. Customer Videos:

Verified Buyer
Reviewer: Anonymous Location: seattle, wa Age: Over 65 Experience Level: Power User Owned Product: 3-4 months
Rating: 4/5 wonderful addition to my network August 4, 2016 I needed an external SSD drive to handle my work in process. I'm a videographer and need as much processing power and speed as I can get. I have an old MacPro 4,4. This drive worked beautifully from day one. It was plug and play. I trust it with my most precious work.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury Elite Pro mini Portable SSD USB 3.0 + eSATA Storage Solution.

Verified Buyer
Reviewer: Anonymous Location: Kankakee, IL Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 4/5 Good looking, fast, best bang for the buck! July 13, 2016 I purchased this after getting a new Late 2015 iMac Retina. The iMac has a 1TB 7200 RPM drive and my previous Mac was a Mini that I had upgraded with an OWC SSD. I became spoiled having an SSD and really wanted to decrease boot and program load times substantially. Initially, I looked at Thunderbolt 2 enclosures, but couldn’t see enough benefit due to the increased cost. I labored over specs for days and had a few email exchanges with Rebecca @ OWC sales/support to clarify things that I was unsure about. As in my previous dealings with OWC she was professional, patient and informative.

I decided to go with a USB 3.0 enclosure as a trade off for just a little less speed for a lot less money. I ordered it on a Sunday, with Monday being a holiday. So the drive was shipped promptly on Tuesday as expected and arrived within two days. Not at all bad for free shipping!

When it arrived, I started with some simple benchmarks. I used XBench and saw results of 314-400MB/s write and read speeds. Certainly an improvement over the internal 7200 RPM Seagate which gave read/write of 162-172MB/s. The enclosure feels rock solid, is attractive and blends with the design elements of my iMac and supporting Twelve South HiRise.

So on to making a bootable clone. For this I used SuperDuper. That process was fairly simple and after 2.5 hours it was complete and I was ready for the moment of truth. After changing the startup drive designation and rebooting, program load times were reduced significantly. I don’t have hard numbers on these, but as a “for instance” when I would click on System Preferences I would get the bouncing icon for 5-30 seconds. Now it’s instantaneous. Office applications used to take several seconds and now just fly open.

After a shutdown I timed the startup sequence. It does take a little longer for the iMac to find/mount the drive but overall boot time has been reduced from 1:15 to 41 seconds. Less than half the time of previous booting.

All things considered I’m quite pleased with the performance improvements that this external SSD has brought me. I would not go so far as to say it’s a “true SSD experience”, but it is darn close. I don’t have the means to monitor the temperature of the drive, but any time that I place my hand on the enclosure it’s cool to the touch. And of course it’s completely quiet. I gave it a 4-star rating because ½ stars weren’t available. The only thing that keeps it from being a 5-star is that I really hoped for a bit more speed. Yes, I’m a very critical consumer.

The instructional videos from OWC are very good. I have relied upon them when installing an SSD in my old Mini. But the process of opening my 2015 iMac (that’s still under warranty) to swap the drive was a bit daunting.

Time will tell in regards to the stability and longevity of this arrangement for my uses. But I do have a lot of faith in the quality of OWC products. Every Mac I’ve owned has been upgraded with RAM or SSD’s from OWC. In six years I haven’t had one failure.

I would recommend this item to a friend! This review is from 500GB OWC Mercury Elite Pro mini Portable SSD USB 3.0 + eSATA Storage Solution.

Verified Buyer
Reviewer: Anonymous Location: Iowa Age: Over 65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Works really good. March 29, 2016 I partitioned this in half. Half is being used for Time Line backup. Other half is used as a manual backup.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury Elite Pro mini Portable 5400RPM USB 3.0 + eSATA Storage Solution.

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Florida, USA Age: Over 65 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 5/5 This product works and is well built March 29, 2016 I just bought my second unit and feel very good about this product. Pro" 1. It is built well, allows SSD and HDD drives to run at full speed on either interface - USB3 or FW800. 2. The drive runs cooler than my previous tiny enclosure (which did neither and delay the startup process interminably), 3. It protects the internally mounted device from vibration with a small grommet around each of the four drive mounting screws. At least for portable use, I recommend using all four supplied screws. 4. Allows external power supply or internal bus power to run the unit. 5. Has a rear mounted on/off switch. A nice thought! 6. Runs cooler than others due to it's perforated enclosure design, e.g., better airflow. I keep it my deep desk drawer full time and monitored its temperature (DriveDX) on a S.M.A.R.T. device there - the case runs just a bit warm to the touch. The returned internal drive temp is 31°C. 7. While cost is higher than most 2.5" externals, the feature set puts it in a better performing group, in my opinion. Con 1. Not a toolless design. 2. A bit more but worth it! Also if you shop elsewhere a recent price reduction puts it closer to the "cheapos".

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA 6Gb/s Drive Enclosure Kit.

Verified Buyer Top 50 Contributor
Reviewer: Anonymous Location: Florida Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 Reliable mini external drive January 12, 2016 Have purchased both standard size and the mini Mercury Elite Pro drives in the past which have performed well ; needed another mini drive unit w/ SATA connectivity dedicated to run an older Windows XP system using emulation software (VMware Fusion) on my 2012 MacPro - so far operation reliability and performance meets all my needs & expectations.

I would recommend this item to a friend! This review is from 500GB OWC Mercury Elite Pro mini Portable 7200RPM USB 3.0 + eSATA Storage Solution.

Verified Buyer Top 100 Contributor
Reviewer: Anonymous Location: NZ Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Great design and easy to use September 20, 2015 Gret design, easy to install and use, all the interfaces I needed and great for maintaining an off site backup to my system

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA 6Gb/s Drive Enclosure Kit.

Verified Buyer
Reviewer: Anonymous Location: Fresno, CA Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Strong Case August 29, 2015 I wanted a strong case for my just replaced 240GB SSD drive and so I selected this one in USB3 and eSATA. Now that it's in my hands I can see that it is strong, sturdy and should last and work for years to come.

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA 6Gb/s Drive Enclosure Kit.

Verified Buyer
Reviewer: Anonymous Location: Baton Rouge, LA Age: 45-54 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 Excellent SSD Drive June 20, 2015 Very fast and has been completely reliable.

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA 6Gb/s Drive Enclosure Kit.

Verified Buyer
Reviewer: Anonymous Age: 35-44 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 Works great February 27, 2015 Connected to my Mac Pro (Mid 2010) to add-on eSATA PCI Card (don't remember the brand). Fast on the eSATA connection, and reliable so far. I use it for sample playback on music applications, which requires very fast disc/access time, and is doing great. The enclosure is sturdy. It is expensive, compared to similar items, but the quality is as good as it gets.

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA 6Gb/s Drive Enclosure Kit.

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Location: Charlotte, NC Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Nice Enclosure! December 24, 2014 I bought this to maintain full USB 3 compatibility with the new Mac Pros at my work, and also added an eSATA card to my own Mac Pro tower for similar speeds at home. This is quite an improvement over USB 2 and Firewire 400, and really speeds up file copying.

It seems well-built, compared to other enclosures I've owned that just hold the drive in place with a couple screws, without attaching to the control board. In one enclosure I used to own, the hard drive would come loose from the board without warning (and according to Murphy, it would do so at the darnedest times, too. Pulling out a small screwdriver and reassembling my hard drive in the middle of a presentation made quite an impression.) This enclosure has screws positioned to keep the drive attached to the board, and the board attached to the enclosure, just like it should. Glad I bought it!

I would recommend this item to a friend! This review is from (*) OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA Drive Enclosure Kit.

Verified Buyer Top 250 Contributor
Reviewer: Anonymous Age: 55-65 Experience Level: Power User Owned Product: over 6 months
Rating: 5/5 OWC Mercury Elite Pro mini Portable USB3.0 + eSATA Storage Solution. May 7, 2014 This is my fastest enclosure , with a WD 750 GB black drive and 09 mac pro with OWC 6G ethernet card , works great . Boots too . I might get another to try the OWC 240 SSD . Doesn't sleep or disconnect or anything weird . Very good unit

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro mini 2.5" Bus-Powered Portable USB 3.0 + eSATA 6Gb/s Drive Enclosure Kit.

Verified Buyer
Reviewer: Anonymous Location: Pacific Northwest Age: Under 18 Experience Level: IT Professional Owned Product: 5-6 months
Rating: 5/5 A great solution for installing Linux on a Laptop June 19, 2013 I have a PC laptop (workstation replacement). I was looking for a way to install another operating system (Linux) without disturbing the laptop's existing disk drives or boot loader. I was able to plug the Mercury Lite drive into the eSata port and also into the USB port for power and install Linux without difficulty. Everything worked out of the box. The installation went smoothly without disturbing the existing disk drives on the laptop. The Mercury Lute drive is very fast, quiet, easy to pack and light-weight. It does not get warm to the touch so I do not need to take precautions as to where it is placed.

I would recommend this item to a friend! This review is from 250GB OWC Mercury Elite Pro mini Portable SSD USB 3.0 + eSATA Storage Solution.

Verified Buyer
Reviewer: Anonymous Location: Kuwait Age: 25-34 Experience Level: IT Professional Owned Product: 1-3 months
Rating: 4/5 This drive is excellent! January 28, 2013 I have ordered this drive just because it was hard to find drives with eSata support here in Kuwait market. And I didn't had USB 3.0 port on my notebook. This drive was fantastic. It gives me a really good speed with eSata connection in data back-up and retrieval. Highly recommended for those who does not have USB 3.0 port and have eSata port.

I would recommend this item to a friend! This review is from 1.0TB OWC Mercury Elite Pro mini Portable 5400RPM USB 3.0 + eSATA Storage Solution.

Verified Buyer
Reviewer: Anonymous Location: zürich Age: 55-65 Experience Level: Noob Owned Product: less than a month
Rating: 4/5 very nice December 22, 2012 with additional firewire it would be perfect, but I guess that would be difficult to have?

I would recommend this item to a friend! This review is from 750GB OWC Mercury Elite Pro mini Portable 7200RPM USB 3.0 + eSATA Storage Solution.

Response from MacSales.com, Marketing December 24, 2012 Not difficult at all - there is a version with firewire available as well: http://eshop.macsales.com/shop/firewire/EliteALmini/eSATA_FW800_FW400_USB
OWC 4.0TB Mercury Elite Pro mini Mfr P/N: ME6UM5T4.0 OWC SKU: OWCME6UM5T4.0 5400RPM Bus-Powered, Multi-Interface Storage Solution 3 Year OWC Limited Warranty Ships: Same Day Only $229.99OWC Price $199.75
Add to CartOther World Computing ME6UM5T4.0 In Stock, Click to Buy Now
Additional Capacities: Add Your Own Drive
  • 0GB
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With 5400 RPM HDD
  • 500GB
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    • OWC Price $109.99
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    • CyberSaver $179.75
  • 4.0TB
With 7200 RPM HDD
  • 500GB
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With SSD
  • 60GB
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    • OWC Price $399.99